Diseases

Distribution of the Cercospora Leaf Spot (Cercospora oryzae Miyake) .

Object description Download GIS-layers

Authors:

Specialist-biologist E.L. Gasich, GIS-specialist M.I.Saulich.

Date of creation:

11.0 9.2004

Scale:

1:20 000 000.

Accuracy of map:

It is created on materials of maps of natural scale 1:33 000 000.

Projection:

"Alber.s Equal Area Conic", 9, 1001, 7, 100, 0, 44, 68, 0, 0.

Basic contents:

Vector map consists of polygons demonstrating area of the disease distribution on rice.

Accuracy of the classifier:

According to the published scientific materials the Cercospora Leaf Spot is registered everywhere in all regions of rice cultivation

Procedure of map drawing:

The area of the Cercospora Leaf Spot has been marked on a blank map. The disease is distributed everywhere on the territory of rice growing (Dorofeeva et al., 1992). Data on the disease severity in Russia are absent in literature that testifies to an inessential influence of the Phyllosticta Leaf Spot on rice yield in this country. Registration and vectorization of raster map have been carried out using standard GIS-technologies.

Sources of the data:

Dorofeeva L.L., Kodyakov A.A., Kratenko V.P., Lebedev М.B., Motovilin A.A. & Tikhonova N.A. 1992. Fungal diseases of rice. Tashkent: FAN. 94 p. (in Russian).
Sutton B.C.& Shahjahan A.K.M. 1982. A comparison of the symptoms and causal agents of narrow brown leaf spot and white leaf streak of rice. Nowa Hedwigia 35(2/3): 197-205.

Right and copyright:

All rights reserved. Copyright © E.L.Gasich & M.I.Saulich (vector map, description and picture).